{
  "url": "https://openlegislation.uk/eu-decision-2019-314/annex/division-3/division-3.3",
  "json_url": "https://openlegislation.uk/eu-decision-2019-314/annex/division-3/division-3.3.json",
  "legislation": "eudn/2019/314",
  "legislation_title": "Commission Implementing Decision (EU) 2019/314 of 21 February 2019 on the approval of the technology used in SEG Automotive Germany GmbH High efficient 48V motor generator (BRM) plus 48V/12V DC/DC converter for use in conventional combustion engine and certain hybrid powered passenger cars as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2019-314",
  "path": "annex/division/3/division/3.3",
  "kind": "division",
  "number": "3.3",
  "heading": "Total efficiency and saved mechanical power",
  "text": "The total efficiency of the 48 V motor generator plus the 48V/12V DC/DC converter shall be calculated using Formula 3:\nFormula 3\nη TOT = η MG × η DC ∕ DC – The 48 V motor generator plus the 48V/12V DC/DC converter generation function lead to saved mechanical power under real-world conditions (ΔPmRW) and type approval NEDC conditions (ΔPmTA) as set out in Formula 4.\nFormula 4\nΔPm = ΔPmRW – ΔPmTA\nWhere the saved mechanical power under real-world conditions (ΔPmRW) shall be calculated in accordance with Formula 5 and the saved mechanical power under type-approval NEDC conditions (ΔPmTA) in accordance with Formula 6:\nFormula 5\nΔP mRW = P RW η B − P RW η TOT\nFormula 6\nΔP mTA = P TA η B − P TA η TOT\nwhere\nPRW Power requirement under ‘real-world’ conditions [W], which is estimated at 750W\nPTA Power requirement under NEDC type-approval conditions [W], which is estimated at 350W\nηB Efficiency of the baseline alternator [%], which is 67 %",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2019/314/annex/division/3/division/3.3",
    "retrieved_at": "2026-11-01T15:12:49.117531+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}